Truck bolster



H. C. PRIEB TRUCK HOLSTER Filed nec. 19, 1924 Patented Dec. l, 1925, si

UNITED STATES im, 1 a

HERMAN C. PRIEBE, 0F BLUE ISLAND, ILLINOIS.

, TRUCK BOLSTER.

Application filed December 19, 1924.

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Bc it known that I, HERMAN C. Pinnen, a citizen of the United States, residing at Blue Island, in the county of Cook and the State of Illinois, have invented a cert-ain new and useful Improvement in Truck Bolsters, of which the following is a full, clear, concise, and exact description.

My invention relates to truck bolsters and has for its object an improved construction thereof enabling a ready assembly and separation of its parts.

The truck bolster of my invention includes its center bearing supporting member, having sleeves at its ends, a strut member underlying the aforesaid member, and a strap underlying the strut member and extending at its ends into and preferably through said sleeves. Keys preferably pass through thc ends of said strap and engage said sleeves. This construction enables me to make the center bearing supporting member in a casting and the strap of wrought metal, preferably suitable steel.

The invent-ion will be more fully explained in connection with the accompanying drawing in which Fig. 1 is a view in elevation taken partially in section on line 1 1 of Fig. 2; and Fig. 2 is a plan view taken partially in section on line 2-2 of Fig. 1.

The truck bolster member 1 is preferably cast in one integral structure with its center bearing socket 2, the side bearing ele* ments 3, and the strut member 4 underlying the aforesaid member at the socket 2. A strap 5 underlies the strut member and passes at its ends through the sleeves 6 formed at the ends of the center' bearing supporting member. The bottom sides of the sleeves are upwardly deflected as indicated at 7, the ends of the straps being downwardly bent over the upwardly deflected portions of the sleeves. Lugs 8 depend from the bolster member 1, these lugs being between and adjacent the sleeves and engaging the top side of the strap to hold it down.

Keys 9 are passed obliquely through holes in the ends of the strap at the outer ends of the sleeves while the strap is sutliciently hot to have its length expanded. When the strap cools, the keys are engaged firmly with the outer ends of the sleeves. The truck member 1 is desirably formed with fork continuations 10 between whose sides the Serial No. 757,037.

keys are passed into the strap. Removable cotter pins 11 pass through the upper ends of the keys and are overhang by the forks to hold the keys in place. Reference is made to my co-pending application, Serial No. 47,883, filed Aug. 3, 1925, which contains claims more broadly covering the construction shown in the present application.

Changes may be made without departing from my invention.

Having thus described my invention, I claim:

1. A truck bolster including the center bearing carrying member thereof having sleeves at its ends; a strut member underlying the aforesaid member; a strap underlying the strut member and extending at its ends into said sleeves; keys passing through lthe ends of said strap and engaging said sleeves; and removable pins passing through said keys, the center bearing carrying member having forked continuations through which said keys pass and which overlie said pins.

2. A truck bolster including the center bearing carrying member thereof having sleeves at its ends; a strut member underlying the aforesaid member; a strap under lying the strut member and extending at its ends into said sleeves, the ends of the strap being downwardly bent over the bottom portions of the sleeves; and keysV passing through the ends of said strap and engaging said sleeves.

3. A truck bolster including the center bearing carrying member thereof having sleeves at its ends; a strut member underlying the aforesaid member; a strap underlying the strut member and extending at its ends into said sleeves, the ends of the strap being downwardly bent over the bottom portions of the sleeves; keys passing through the ends of said strap and engaging said sleeves; and removable pins passing through said keys, the center bearing carrying member having forked continuations through which said keys pass and which overlie said pins.

4f. A truck bolster including the center bearing carrying member thereof having sleeves at its ends; a strut member underlying t-he aforesaid member; a strap underlying the strut member and extending at its ends into said sleeves, the ends of the strap being downwardly bent over the bottom portions of the sleeves, said center bearing carrying member also Carrying depending lugs between and adjacent said sleeves and engaging the top side of said strap; and keys passing through the ends of said strap and engaging said sleeves.

5. A truck bolster including the center bearing carrying member thereof having a sleeve at one end; a strut member underlying the aforesaid member; a strap underlying the strut member and assembled at its ends with the ends of the center bearing carrying member, one end of the strap passing through the aforesaid sleeve; a key passing through the latter end of the strap and engaging the sleeve that receives it; and a re movable pin passing through said key, the center bearing carrying member having a forked continuation through which said key passes and which overlies said pin.

6. A truck bolster inclu-ding the center bearing Carrying member thereof having a sleeve at one end; a strut member underlying the aforesaid member; a strap underlying the strut member and assembled at its ends with the ends of the center bearing carrying member, one end of the strap passing through the aforesaid sleeve, this end of the strap being bent dowmvardly over the bottom portion of said sleeve; and a key passing through this end of the strap and engaging said sleeve.

In Witness whereof, l hereunto subscribe my name.

HERMAN C. PRIEBE. 

